Constituents of essential oils from leaves and seeds of Laurus nobilis L.: A chemotaxonomic approach

Abstract

In the present study, chemical compositions of essential oils from seeds and leaves of laurel (Laurus nobilis L.) were evaluated using GC-GC/MS system. Sixty nine different compounds were identified constituting 86.7% of the total oil from the seed, while 76 compounds were determined, constituting 95.8% of the total oil extracted from the leaves. The major compounds of essential oil from laurel seeds included eucalyptol (17.2%), α-terpinyl acetate (9.0%), caryophyllene oxide (6.1%), spathulenol (5.0%) and methyl eugenol (4.2%), constituting 41.5% of the total oil. However, eucalyptol (18.0%), α-terpinyl acetate (13.1%), sabinene (7.8%), α-pinene (4.5%), 2 (4-methoxyphenyl)-N,N,2-trimethyl-1-pyrroline (4.4%) were identified as the major compounds in the oil from laurel leaves, constituting 47.8% of the total oil. Eucalyptol and α- terpinyl acetate, belonging to monoterpenoids, were determined in the highest concentrations within both oils. However, the other principle compounds differ between the two volatile oils.

Chemical composition and biological activities of essential oils of endemic Thymus leucostomus Hausskn. et Velen

“…Essential oils were investigated by the chemical analysis of these compounds and their biological activities against several bacteria, yeast and fungi were studied (Touhami et al 2017). The essential oil (EO) and extracts from medicinal and aromatics plans may contain a wide variety of free radical scavenging molecules, such as phenolic compounds, nitrogen compounds, vitamins, terpenoids, and some other endogenous metabolites, which are rich in antioxidant activity (Elkiran et al 2018, Pirbalouti et al 2013.…”

Phytochemical Characterization and Evaluation of the Antioxidant and Anti-Enzymatic Activity of Five Common Spices: Focus on Their Essential Oils and Spent Material Extractives

“…An Agilent 6890N gas chromatograph [93] coupled with a mass spectrometer (MS) detector (Agilent model 5975 inert XL) and a flame ionization detector (FID) was used to assess the qualitative and quantitative profile of essential oils isolated from investigated spices. TRB-5MS capillary columns (30 m length, 0.25 mm internal diameter, 0.25 µm film thickness) were used for each detector.…”

Laurus nobilis L., (Habb-ul-Ghar), A Review on Phytochemistry, Pharmacology and Ethnomedicinal Uses

“…phosphate as inorganic compounds 33 . α-pinene GC-MS Lebanon, 32,33 Turkey, 37,38 Bulgaria, 34 Greece, 10 Tunisia, 12 Iran, 39 India 6 β-pinene GC-MS Lebanon, 32,33 Turkey, 37,38 Bulgaria, 34 Greece, 10 Iran, 39 Tunisia 12 α-phellandrene GC-MS Lebanon, 36 Turkey, 37 Bulgaria, 34 Greece, 10 Iran, 39…”